package com.xiaoxu.springCloudTest.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.common.vo.Result;
import com.xiaoxu.common.vo.Search;
import com.xiaoxu.springCloudTest.dao.CityDao;
import com.xiaoxu.springCloudTest.service.CityService;
import com.xiaoxu.test.entity.City;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.*;


@Service
public class CityServiceImpl implements CityService {
	@Autowired
	private CityDao cityDao;

	@Override
	@Transactional
	public Result<City> insertCity(City city) {
		City temp = cityDao.getCityByCityName(city.getCityName());
		if (temp != null) {
			return new Result<>(Result.ResultStatus.FAILD.code, "City name is repead.");
		}

		city.setDateCreated(new Date());
		city.setDateModified(new Date());
		cityDao.insertCity(city);
		return new Result<>(Result.ResultStatus.SUCCESS.code, "Insert success.", city);
	}

	@Override
	@Transactional
	public Result<City> updateCity(City city) {
		City temp = cityDao.getCityByCityName(city.getCityName());
		if (temp != null && temp.getCityId() != city.getCityId()) {
			return new Result<>(Result.ResultStatus.FAILD.code, "City name is repead.");
		}

		city.setDateModified(new Date());
		cityDao.updateCity(city);
		return new Result<>(Result.ResultStatus.SUCCESS.code, "Update success.", city);
	}

	@Override
	@Transactional
	public Result<Object> deleteCityByCityId(int cityId) {
		cityDao.deleteCityByCityId(cityId);
		return new Result<>(Result.ResultStatus.SUCCESS.code, "Delete success.");
	}

	@Override
	public City getCityByCityId(int cityId) {
		return cityDao.getCityByCityId(cityId);
	}

	@Override
	public City getCityByNames(String cityName, String localCityName) {
		return cityDao.getCityByNames(cityName, localCityName);
	}

	@Override
	public List<City> getCitiesByCountryId(int countryId) {
//		return cityDao.getCitiesByCountryId(countryId);
		return Optional
				.ofNullable(cityDao.getCitiesByCountryId(countryId))
				.orElse(Collections.emptyList());
	}

	@Override
	public PageInfo<City> getCitiesBySearch(Search search) {
		// 初始化 seach 对象
		search.init();
		// 开始分页
		PageHelper.startPage(search.getCurrentPage(), search.getPageSize());
		// 返回分页对象
		return new PageInfo<>(Optional
				.ofNullable(cityDao.getCitiesBySearch(search))
				.orElse(Collections.emptyList()));
	}

}
